/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.spi;

import com.facebook.presto.common.type.Type;
import com.facebook.presto.spi.relation.VariableReferenceExpression;

import java.util.Optional;

public interface VariableAllocator
{
    default VariableReferenceExpression newVariable(String nameHint, Type type)
    {
        return newVariable(Optional.empty(), nameHint, type);
    }

    default VariableReferenceExpression newVariable(String nameHint, Type type, String suffix)
    {
        return newVariable(Optional.empty(), nameHint, type);
    }

    VariableReferenceExpression newVariable(Optional<SourceLocation> sourceLocation, String nameHint, Type type);

    VariableReferenceExpression newVariable(Optional<SourceLocation> sourceLocation, String nameHint, Type type, String suffix);
}
